attribute vec4 a_color;  
attribute vec4 a_position;
attribute vec2 a_texCoord;

varying vec4 v_color;
varying vec2 v_texCoord;

void main()  
{  
    v_color = a_color;
    v_texCoord = a_texCoord;
    gl_Position = CC_MVPMatrix * a_position;  
}
